A Morimi introduces low power LED driver for portable medical devices

A Morimi days before the launch of semiconductor single channel Quad-Mode LED driver CAT3661, led for ultra low power applications, such as medical equipment will hold together.

RussEL A Morimi, director of LED semiconductor power supply Anthony, said: for portable electronic device designers, high energy efficiency and small size is usually the most important factor. By low power CAT3661 Quad-Mode LED driver patented technology, fully embodies these requirements, the use of time with small form factor and long battery customers with consideration, introduced with the end user needs new battery powered products design. "

CAT3661 uses a patented architecture, integrated fault protection and fault diagnosis, capable of driving up to 5mA of a single LED backlight. Soft start current limiting and short circuit protection make this new device very suitable for button battery powered equipment. Typical applications include low power liquid crystal display (LCD) backlight and a wide range of portable handheld devices including medical devices backlight.

CAT3661 uses only 3mm x x 0.8mm (high) TQFN-16 package, to provide useful solutions to deal with the new design of available board space constraints of the engineers in. This new device provides low noise input ripple and constant switching frequency, the use of small size external ceramic capacitors, thus further saving space and total system cost. Four mode charge pump supports a wide range of input voltage from 2.0V to 5.5V, but also allows CAT3661 to provide up to 92% of the peak energy efficiency level, higher than the traditional high energy efficiency 1.5x mode charge pump up to 10%. This device is fully loaded in all operating mode under the typical quiescent current of only 150 A, with zero current off, promote energy consumption, to ensure that the application of the battery to extend to the longest.

Package and price

CAT3661 uses a lead-free TQFN-16 package, the price of 10000 pieces per batch of $0.86.